Malicious PDF — malware analysis report

Static analysis result for SHA-256 005200b59780f46e…

MALICIOUS

PDF

70.6 KB Created: 2021-09-13 19:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: c953c4da4f783d536b305597ce2c94db SHA-1: 1b1cfb365b6fe760c568cba7a305532f362080ba SHA-256: 005200b59780f46e97dc8616be567bcbcfdbb746a1baf794bc89d40ff120bbcc
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with numerous URLs pointing to potentially compromised WordPress sites and disposable hosting, indicative of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ikansambel.com/contents/files/fugop.pdf In PDF document text
    • http://khachsanmyngoc.com/upload/files/55068287749.pdfIn PDF document text
    • http://ronaldtan.nl/images/photo/govinalegagofu.pdfIn PDF document text
    • http://shippingengineering.com/files/ckeditorothers/45166841632.pdfIn PDF document text
    • http://mtkshop.com/images/uploads/file/zakitekiv.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c5a6aa18f2---65979498047.pdfIn PDF document text
    • https://yuanfuconstruction.com/ckfinder/upload/files/kawamukuritazodaligejuva.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1613dbc0538b5c---6655033410.pdfIn PDF document text
    • http://diamant-x.sk/UserFiles/file/98390960109.pdfIn PDF document text
    • https://lanegarrett.net/userfiles/file/24613695693.pdfIn PDF document text
    • http://mudrberanova.cz/userfiles/file/dujotepuvo.pdfIn PDF document text
    • http://xn--3bsx3iw22bmot.com/filespath/files/20210901151138.pdfIn PDF document text
    • http://tianlanip.com/filespath/files/20210911185824.pdfIn PDF document text
    • http://ozhelalikram.de/resimler/files/78975247667.pdfIn PDF document text
    • http://caminodesantiagoenmoto.com/assets/ckfinder/core/connector/php/uploads/files/49632974320.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/da6085cdc800bdb9e44c46cafae10597/vamejimizaxefonujula.pdfIn PDF document text
    • https://y3stwk65l-mn9.com/contents/files/kanigaxipagedexijoxokip.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1612fd0568c9e0---74219956423.pdfIn PDF document text
    • http://healhumanity.foundation/userfiles/file/menefusulozamolomabesoja.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613036744267f---kozekopibafuveteluforu.pdfIn PDF document text
    • http://bmfjhjk.friend-match.com/upload/files/49499785856.pdfIn PDF document text
    • https://dubaimotorcycletours.com/uploaded_images/files/muxatit.pdfIn PDF document text
    • https://juvelyrikoscentras.lt/Files/file/42371836735.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/36641016677.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/m0hk6kb8jvj2v9s5mm9oclc0e3/kewuwepotemozowuxuxo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=idle+supermarket+tycoon+modPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB535 10840 bytes
SHA-256: 1e27d0d885ca25ef9ce50d7a2412efb34800b7d0b9407ddc80c3437af96ca597
font_01_sfnt_off0000ce4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE4B 15560 bytes
SHA-256: 3a9a410a870a0d8b1d2745b232212ab56977ba33660818dd228308f9ee689556
font_02_sfnt_off0000f467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF467 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1